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    <a href="../index.html">cppreference.com</a> &gt; <a href=
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    Standard C String and Character
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  <p><a href="all.html">Display all entries</a> for Standard C String
  and Character on one page, or view entries individually:</p>

  <table class="category-table">
    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href="atof.html">atof</a></td>

      <td class="category-table-td">converts a string to a double</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href="atoi.html">atoi</a></td>

      <td class="category-table-td">converts a string to an
      integer</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href="atol.html">atol</a></td>

      <td class="category-table-td">converts a string to a long</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "isalnum.html">isalnum</a></td>

      <td class="category-table-td">true if a character is
      alphanumeric</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "isalpha.html">isalpha</a></td>

      <td class="category-table-td">true if a character is
      alphabetic</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "iscntrl.html">iscntrl</a></td>

      <td class="category-table-td">true if a character is a control
      character</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "isdigit.html">isdigit</a></td>

      <td class="category-table-td">true if a character is a digit</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "isgraph.html">isgraph</a></td>

      <td class="category-table-td">true if a character is a graphical
      character</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "islower.html">islower</a></td>

      <td class="category-table-td">true if a character is
      lowercase</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "isprint.html">isprint</a></td>

      <td class="category-table-td">true if a character is a printing
      character</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "ispunct.html">ispunct</a></td>

      <td class="category-table-td">true if a character is
      punctuation</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "isspace.html">isspace</a></td>

      <td class="category-table-td">true if a character is a space
      character</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "isupper.html">isupper</a></td>

      <td class="category-table-td">true if a character is an uppercase
      character</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "isxdigit.html">isxdigit</a></td>

      <td class="category-table-td">true if a character is a
      hexidecimal character</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "memchr.html">memchr</a></td>

      <td class="category-table-td">searches an array for the first
      occurance of a character</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "memcmp.html">memcmp</a></td>

      <td class="category-table-td">compares two buffers</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "memcpy.html">memcpy</a></td>

      <td class="category-table-td">copies one buffer to another</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "memmove.html">memmove</a></td>

      <td class="category-table-td">moves one buffer to another</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "memset.html">memset</a></td>

      <td class="category-table-td">fills a buffer with a
      character</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "strcat.html">strcat</a></td>

      <td class="category-table-td">concatenates two strings</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "strchr.html">strchr</a></td>

      <td class="category-table-td">finds the first occurance of a
      character in a string</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "strcmp.html">strcmp</a></td>

      <td class="category-table-td">compares two strings</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "strcoll.html">strcoll</a></td>

      <td class="category-table-td">compares two strings in accordance
      to the current locale</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "strcpy.html">strcpy</a></td>

      <td class="category-table-td">copies one string to another</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "strcspn.html">strcspn</a></td>

      <td class="category-table-td">searches one string for any
      characters in another</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "strerror.html">strerror</a></td>

      <td class="category-table-td">returns a text version of a given
      error code</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "strlen.html">strlen</a></td>

      <td class="category-table-td">returns the length of a given
      string</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "strncat.html">strncat</a></td>

      <td class="category-table-td">concatenates a certain amount of
      characters of two strings</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "strncmp.html">strncmp</a></td>

      <td class="category-table-td">compares a certain amount of
      characters of two strings</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "strncpy.html">strncpy</a></td>

      <td class="category-table-td">copies a certain amount of
      characters from one string to another</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "strpbrk.html">strpbrk</a></td>

      <td class="category-table-td">finds the first location of any
      character in one string, in another string</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "strrchr.html">strrchr</a></td>

      <td class="category-table-td">finds the last occurance of a
      character in a string</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "strspn.html">strspn</a></td>

      <td class="category-table-td">returns the length of a substring
      of characters of a string</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "strstr.html">strstr</a></td>

      <td class="category-table-td">finds the first occurance of a
      substring of characters</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "strtod.html">strtod</a></td>

      <td class="category-table-td">converts a string to a double</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "strtok.html">strtok</a></td>

      <td class="category-table-td">finds the next token in a
      string</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "strtol.html">strtol</a></td>

      <td class="category-table-td">converts a string to a long</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "strtoul.html">strtoul</a></td>

      <td class="category-table-td">converts a string to an unsigned
      long</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "strxfrm.html">strxfrm</a></td>

      <td class="category-table-td">converts a substring so that it can
      be used by string comparison functions</td>
    </tr>

    <tr class="category-table-tr-1">
      <td class="category-table-td"><a href=
      "tolower.html">tolower</a></td>

      <td class="category-table-td">converts a character to
      lowercase</td>
    </tr>

    <tr class="category-table-tr-2">
      <td class="category-table-td"><a href=
      "toupper.html">toupper</a></td>

      <td class="category-table-td">converts a character to
      uppercase</td>
    </tr>
  </table>
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